只要我们曾经拥有过 对你我来讲已经足够
zhi3 yao4 wo3 men5 zeng2 jing1 yong3 you3 guo4, dui4 ni3 wo3 lai2 jiang3 yi3 jing1 zu2 gou4
As long as we once had each other, for you for me, all have been enough

人的一生有许多回忆 只愿你的追忆有个我
ren2 de5 yi4 sheng1 you3 xu3 duo2 hui2 yi3, zhi3 yuan4 ni3 de5 zhui1 yi4 you3 g5e wo3
There are a lot of memories in a person’s life. I only wish that there will be a me in your remembrance

Translated by Shu
Note:
Duckweed:Duckweed (Lemna minor) is a free-floating, seed-bearing plant with up to three leaves or fronds. The plants are 1/16 to 1/8 inch in length and create dense colonies in quiet, undisturbed water. Duckweed has a rapid growth rate and is considered invasive. Despite being disadvantaged as an invasive weed, duckweed has numerous benefits. A number of duck species consume duckweed and transport them to other water areas.
The passage comes from: http://www.ehow.com/list_6686128_duckweed-benefits.html